/* ============================================================
   DESIGN SYSTEM — Igor Lima · Product Designer
   Direction: blue / black / white · clean · tech · premium
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:ital,wght@0,300;0,400;0,500;0,600;0,700;1,300;1,400&family=Syne:wght@400;500;600;700&display=swap');

/* ── Tokens ── */
:root {
  --ink:      #0a0a0f;
  --ink-70:   rgba(10,10,15,.70);
  --ink-40:   rgba(10,10,15,.40);
  --ink-12:   rgba(10,10,15,.10);
  --ink-06:   rgba(10,10,15,.055);
  --blue:     #1a6bfa;
  --blue-dk:  #1254d4;
  --blue-lt:  #e8f0fe;
  --blue-mid: rgba(26,107,250,.10);
  --surface:  #f7f8fc;
  --white:    #ffffff;

  --font-display: 'Syne', sans-serif;
  --font-body:    'Plus Jakarta Sans', sans-serif;

  --space-xs: .5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 8rem;

  --radius-sm:  6px;
  --radius-md:  14px;
  --radius-lg:  24px;
  --radius-pill: 100px;

  --ease: cubic-bezier(.4,0,.2,1);
  --transition: .22s var(--ease);

  --max-w: 1160px;
  --nav-h: 68px;
}

/* ── Reset ── */
*,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  background: var(--white);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; }
a   { color: inherit; text-decoration: none; }
ul  { list-style: none; }
button { border: none; background: none; cursor: pointer; font: inherit; }

/* ── Typography ── */
.display {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -.03em;
}
h1 { font-size: clamp(2.8rem, 6.5vw, 6rem); }
h2 { font-size: clamp(1.9rem, 3.8vw, 3.2rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.6rem); }
h4 { font-size: 1rem; font-weight: 600; }

.eyebrow {
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--blue);
}

.lead {
  font-size: clamp(.97rem, 1.3vw, 1.12rem);
  line-height: 1.82;
  color: var(--ink-70);
  font-weight: 400;
}

/* ── Layout ── */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 5vw, 3rem);
}
.section { padding-block: clamp(var(--space-lg), 10vw, var(--space-xl)); }

/* ── Nav ── */
.nav {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  transition: background var(--transition), box-shadow var(--transition);
}
.nav.scrolled {
  background: rgba(255,255,255,.93);
  backdrop-filter: blur(18px);
  box-shadow: 0 1px 0 var(--ink-12);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}
.nav__logo {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--ink);
  transition: opacity var(--transition);
}
.nav__logo:hover { opacity: .55; }
.nav__logo span { color: var(--blue); }

.nav__links {
  display: flex;
  align-items: center;
  gap: 2.2rem;
}
.nav__link {
  font-size: .82rem;
  font-weight: 500;
  color: var(--ink-70);
  position: relative;
  transition: color var(--transition);
}
.nav__link::after {
  content: '';
  position: absolute;
  inset-block-end: -4px;
  inset-inline-start: 0;
  width: 0;
  height: 2px;
  background: var(--blue);
  border-radius: 2px;
  transition: width var(--transition);
}
.nav__link:hover, .nav__link.active { color: var(--ink); }
.nav__link:hover::after, .nav__link.active::after { width: 100%; }

.nav__cta {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .5rem 1.2rem;
  background: var(--blue);
  border-radius: var(--radius-pill);
  font-size: .8rem;
  font-weight: 700;
  color: var(--white);
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
}
.nav__cta:hover {
  background: var(--blue-dk);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(26,107,250,.3);
}

.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}
.nav__hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--ink);
  transition: transform var(--transition), opacity var(--transition);
}
.nav__hamburger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav__hamburger.open span:nth-child(2) { opacity: 0; }
.nav__hamburger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.nav__mobile {
  display: none;
  position: fixed;
  inset-block-start: var(--nav-h);
  inset-inline: 0;
  background: rgba(255,255,255,.97);
  backdrop-filter: blur(20px);
  z-index: 99;
  padding: var(--space-md) var(--space-sm) var(--space-lg);
  flex-direction: column;
  gap: var(--space-sm);
  border-block-end: 1px solid var(--ink-12);
  transform: translateY(-8px);
  opacity: 0;
  transition: transform var(--transition), opacity var(--transition);
}
.nav__mobile.open { display: flex; transform: translateY(0); opacity: 1; }
.nav__mobile .nav__link {
  font-size: 1rem;
  padding: .6rem 0;
  border-bottom: 1px solid var(--ink-06);
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--font-body);
  font-size: .85rem;
  font-weight: 700;
  letter-spacing: .01em;
  border-radius: var(--radius-pill);
  transition: background var(--transition), color var(--transition), transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  cursor: pointer;
  border: none;
}
.btn:hover { transform: translateY(-2px); }

.btn--primary {
  background: var(--ink);
  color: var(--white);
  padding: .8rem 1.8rem;
}
.btn--primary:hover {
  background: #1a1a24;
  box-shadow: 0 10px 28px rgba(10,10,15,.2);
}

.btn--blue {
  background: var(--blue);
  color: var(--white);
  padding: .8rem 1.8rem;
}
.btn--blue:hover {
  background: var(--blue-dk);
  box-shadow: 0 10px 28px rgba(26,107,250,.3);
}

.btn--outline {
  background: transparent;
  color: var(--ink);
  padding: .75rem 1.75rem;
  border: 1.5px solid var(--ink-40);
}
.btn--outline:hover {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--white);
}

.btn--ghost {
  background: transparent;
  color: var(--blue);
  padding: .4rem 0;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .07em;
  text-transform: uppercase;
  border-bottom: 1.5px solid transparent;
  border-radius: 0;
}
.btn--ghost:hover { border-bottom-color: var(--blue); transform: none; }
.btn--ghost .arrow { transition: transform var(--transition); }
.btn--ghost:hover .arrow { transform: translateX(4px); }

/* ── Divider ── */
.divider {
  width: 32px;
  height: 2px;
  background: var(--blue);
  border-radius: 2px;
  margin-block: var(--space-sm);
}

/* ── Tags ── */
.tag {
  display: inline-block;
  padding: .22rem .7rem;
  background: var(--blue-mid);
  border: 1px solid rgba(26,107,250,.18);
  border-radius: var(--radius-pill);
  font-size: .67rem;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--blue-dk);
}

/* ── Footer ── */
.footer {
  background: var(--ink);
  padding-block: var(--space-lg);
}
.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  flex-wrap: wrap;
}
.footer__logo {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: -.02em;
}
.footer__logo span { color: var(--blue); }
.footer__links { display: flex; gap: var(--space-md); flex-wrap: wrap; }
.footer__link {
  font-size: .8rem;
  color: rgba(255,255,255,.4);
  letter-spacing: .02em;
  transition: color var(--transition);
}
.footer__link:hover { color: var(--white); }
.footer__copy { font-size: .7rem; color: rgba(255,255,255,.22); }

/* ── Scroll reveal ── */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .6s var(--ease), transform .6s var(--ease);
}
.reveal.visible { opacity: 1; transform: none; }
.reveal--delay-1 { transition-delay: .1s; }
.reveal--delay-2 { transition-delay: .2s; }
.reveal--delay-3 { transition-delay: .3s; }
.reveal--delay-4 { transition-delay: .4s; }

/* ============================================================
   HOME
   ============================================================ */

.hero {
  min-height: 100svh;
  display: grid;
  grid-template-rows: 1fr auto;
  padding-block-start: var(--nav-h);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--ink-06) 1px, transparent 1px),
    linear-gradient(90deg, var(--ink-06) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 0%, black 40%, transparent 100%);
}
.hero::after {
  content: '';
  position: absolute;
  inset-block-start: -140px;
  inset-inline-end: -60px;
  width: 520px;
  height: 520px;
  background: radial-gradient(circle, rgba(26,107,250,.1) 0%, transparent 65%);
  pointer-events: none;
}

.hero__content {
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: var(--space-lg);
  align-items: center;
  padding-block: var(--space-xl) var(--space-lg);
  position: relative;
  z-index: 1;
}
.hero__text { display: flex; flex-direction: column; }

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .35rem .85rem;
  background: var(--blue-mid);
  border: 1px solid rgba(26,107,250,.2);
  border-radius: var(--radius-pill);
  margin-block-end: var(--space-md);
  width: fit-content;
}
.hero__badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--blue);
  animation: pulse 2.2s ease-in-out infinite;
}
@keyframes pulse {
  0%,100% { opacity: 1; transform: scale(1); }
  50%      { opacity: .5; transform: scale(1.4); }
}
.hero__badge-text {
  font-size: .67rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--blue);
}

.hero__headline { margin-block-end: var(--space-md); }
.hero__headline em { font-style: normal; color: var(--blue); }

.hero__sub {
  max-width: 480px;
  margin-block-end: var(--space-lg);
  font-size: clamp(.93rem, 1.2vw, 1.05rem);
  line-height: 1.82;
  color: var(--ink-70);
}
.hero__actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

/* Photo block */
.hero__photo-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.hero__photo-frame {
  position: relative;
  width: 340px;
  height: 420px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--surface);
  flex-shrink: 0;
  box-shadow: 0 32px 80px rgba(10,10,15,.14);
}
.hero__photo-frame::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(26,107,250,.07) 0%, transparent 50%);
  z-index: 1;
  pointer-events: none;
}
.hero__photo-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 10%;
}
.hero__chip {
  position: absolute;
  bottom: -16px;
  left: -20px;
  background: var(--white);
  border: 1px solid var(--ink-12);
  border-radius: var(--radius-md);
  padding: .7rem 1rem;
  display: flex;
  align-items: center;
  gap: .65rem;
  box-shadow: 0 8px 32px rgba(10,10,15,.1);
  z-index: 2;
}
.hero__chip-icon {
  width: 34px; height: 34px;
  background: var(--blue-mid);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: .95rem;
  flex-shrink: 0;
}
.hero__chip-value {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--ink);
  line-height: 1;
  letter-spacing: -.02em;
}
.hero__chip-label {
  font-size: .62rem;
  color: var(--ink-70);
  margin-block-start: .15rem;
  white-space: nowrap;
  font-weight: 500;
}

.hero__scroll {
  padding-block-end: var(--space-md);
  display: flex;
  align-items: center;
  gap: .65rem;
  font-size: .66rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-40);
  position: relative;
  z-index: 1;
}
.hero__scroll-line {
  width: 34px;
  height: 1px;
  background: var(--ink-40);
  animation: scrollLine 2.2s ease-in-out infinite;
}
@keyframes scrollLine {
  0%,100% { transform: scaleX(1); transform-origin: left; }
  50%      { transform: scaleX(.3); transform-origin: left; }
}

/* Stats */
.stats {
  background: var(--surface);
  padding-block: var(--space-lg);
  border-block: 1px solid var(--ink-12);
}
.stats__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-md);
  text-align: center;
}
.stats__number {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 4.5vw, 3.6rem);
  font-weight: 700;
  line-height: 1;
  color: var(--ink);
  letter-spacing: -.04em;
}
.stats__number span { color: var(--blue); }
.stats__label {
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--ink-40);
  margin-block-start: .5rem;
}

/* Home projects */
.home-projects { background: var(--white); }
.home-projects__header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-sm);
  margin-block-end: var(--space-lg);
  flex-wrap: wrap;
}
.home-projects__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

/* Project card */
.project-card {
  border: 1.5px solid var(--ink-12);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--white);
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
  display: flex;
  flex-direction: column;
}
.project-card:hover {
  box-shadow: 0 24px 64px rgba(10,10,15,.1);
  transform: translateY(-4px);
  border-color: rgba(26,107,250,.25);
}
.project-card__thumb {
  aspect-ratio: 16/9;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.project-card:nth-child(1) .project-card__thumb { background: #deeafd; }
.project-card:nth-child(2) .project-card__thumb { background: #d5f0ec; }
.project-card:nth-child(3) .project-card__thumb { background: #dfe4f8; }
.project-card:nth-child(4) .project-card__thumb { background: #e9e4f8; }

.project-card__thumb-inner {
  font-family: var(--font-display);
  font-size: 1.7rem;
  font-weight: 700;
  color: var(--blue);
  width: 64px; height: 64px;
  border-radius: var(--radius-md);
  background: rgba(255,255,255,.85);
  display: flex; align-items: center; justify-content: center;
  transition: transform var(--transition);
  letter-spacing: -.04em;
}
.project-card:hover .project-card__thumb-inner { transform: scale(1.1); }

.project-card__body {
  padding: 1.4rem 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: .6rem;
}
.project-card__title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -.02em;
  line-height: 1.25;
}
.project-card__desc {
  font-size: .855rem;
  color: var(--ink-70);
  line-height: 1.65;
}
.project-card__tags {
  display: flex; flex-wrap: wrap; gap: .3rem;
  margin-block-start: auto;
  padding-block-start: .3rem;
}
.project-card__footer {
  padding: .9rem 1.5rem;
  border-top: 1px solid var(--ink-06);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* CTA dark */
.cta-section {
  background: var(--ink);
  color: var(--white);
  padding-block: clamp(var(--space-lg), 12vw, 120px);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 80% at 50% 110%, rgba(26,107,250,.22) 0%, transparent 65%);
  pointer-events: none;
}
.cta-section .eyebrow { color: var(--blue); position: relative; z-index: 1; }
.cta-section h2 { color: var(--white); max-width: 560px; margin-inline: auto; margin-block: var(--space-sm) var(--space-md); position: relative; z-index: 1; }
.cta-section .lead { color: rgba(255,255,255,.5); margin-block-end: var(--space-md); max-width: 400px; margin-inline: auto; position: relative; z-index: 1; }
.btn--white {
  background: var(--white);
  color: var(--ink);
  padding: .85rem 2.2rem;
  border-radius: var(--radius-pill);
  font-size: .85rem;
  font-weight: 700;
  position: relative;
  z-index: 1;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
}
.btn--white:hover {
  background: var(--surface);
  transform: translateY(-2px);
  box-shadow: 0 12px 36px rgba(0,0,0,.35);
}

/* ============================================================
   SOBRE
   ============================================================ */

.page-hero {
  padding-block-start: calc(var(--nav-h) + var(--space-xl));
  padding-block-end: var(--space-lg);
}

.sobre-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: clamp(var(--space-lg), 8vw, 100px);
  align-items: start;
}
.sobre-photo {
  position: sticky;
  top: calc(var(--nav-h) + 2rem);
}
.sobre-photo__frame {
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  background: var(--surface);
  box-shadow: 0 20px 56px rgba(10,10,15,.1);
}
.sobre-photo__frame img {
  width: 100%; height: auto; display: block;
  object-fit: cover;
}
.sobre-photo__caption {
  position: absolute;
  inset-block-end: var(--space-sm);
  inset-inline: var(--space-sm);
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(8px);
  border-radius: var(--radius-sm);
  padding: .55rem .9rem;
  font-size: .7rem;
  color: var(--ink-70);
  font-weight: 600;
  display: flex; align-items: center; gap: .4rem;
}
.sobre-photo__caption::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: #22c55e;
  flex-shrink: 0;
}

.sobre-content { padding-block-start: var(--space-sm); }
.sobre-content p {
  color: var(--ink-70);
  line-height: 1.85;
  margin-block-end: var(--space-sm);
  font-size: .93rem;
}

.skills-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .4rem .6rem;
  margin-block: var(--space-md);
}
.skill-item {
  display: flex;
  align-items: center;
  gap: .55rem;
  font-size: .8rem;
  color: var(--ink-70);
  font-weight: 400;
}
.skill-item::before {
  content: '';
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--blue);
  flex-shrink: 0;
}

.experience-list {
  display: flex;
  flex-direction: column;
  margin-block: var(--space-lg);
}
.exp-item {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: var(--space-sm);
  padding-block: var(--space-md);
  border-top: 1px solid var(--ink-12);
}
.exp-item:last-child { border-bottom: 1px solid var(--ink-12); }
.exp-year {
  font-size: .7rem;
  color: var(--ink-40);
  padding-block-start: .2rem;
  font-weight: 600;
  letter-spacing: .02em;
}
.exp-role {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  margin-block-end: .2rem;
  letter-spacing: -.01em;
}
.exp-company {
  font-size: .8rem;
  color: var(--blue);
  margin-block-end: .45rem;
  font-weight: 600;
}
.exp-desc {
  font-size: .8rem;
  color: var(--ink-70);
  line-height: 1.65;
}

/* ============================================================
   PROJETOS
   ============================================================ */

.projetos-intro {
  padding-block-start: calc(var(--nav-h) + var(--space-xl));
  padding-block-end: var(--space-lg);
}
.projetos-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

/* ============================================================
   CONTATO
   ============================================================ */

.contato-page {
  padding-block-start: calc(var(--nav-h) + var(--space-xl));
  padding-block-end: var(--space-xl);
  min-height: 100svh;
}
.contato-wrap { max-width: 600px; }
.contato-links {
  display: flex;
  flex-direction: column;
  gap: .75rem;
  margin-block-start: var(--space-lg);
}
.contato-link {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.1rem 1.3rem;
  border: 1.5px solid var(--ink-12);
  border-radius: var(--radius-md);
  background: var(--white);
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}
.contato-link:hover {
  border-color: var(--blue);
  box-shadow: 0 8px 28px rgba(26,107,250,.1);
  transform: translateX(4px);
}
.contato-link__icon {
  width: 42px; height: 42px;
  border-radius: var(--radius-sm);
  background: var(--surface);
  display: flex; align-items: center; justify-content: center;
  font-size: .82rem;
  font-weight: 700;
  color: var(--ink);
  flex-shrink: 0;
  transition: background var(--transition), color var(--transition);
}
.contato-link:hover .contato-link__icon { background: var(--blue); color: var(--white); }
.contato-link__info { flex: 1; }
.contato-link__label {
  font-size: .65rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink-40);
  margin-block-end: .15rem;
}
.contato-link__value {
  font-size: .88rem;
  font-weight: 500;
  color: var(--ink);
}
.contato-link__arrow {
  color: var(--ink-40);
  font-size: .85rem;
  transition: color var(--transition), transform var(--transition);
}
.contato-link:hover .contato-link__arrow { color: var(--blue); transform: translateX(3px); }

/* ============================================================
   CASE STUDY
   ============================================================ */

.case-hero {
  padding-block-start: calc(var(--nav-h) + var(--space-xl));
  padding-block-end: var(--space-lg);
  border-bottom: 1px solid var(--ink-12);
}
.case-hero__back {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink-40);
  transition: color var(--transition);
  margin-block-end: var(--space-md);
}
.case-hero__back:hover { color: var(--blue); }
.case-hero__back svg { transition: transform var(--transition); }
.case-hero__back:hover svg { transform: translateX(-3px); }

.case-hero__meta {
  display: flex;
  align-items: center;
  gap: .6rem;
  flex-wrap: wrap;
  margin-block-end: var(--space-md);
}
.case-hero__headline {
  max-width: 800px;
  margin-block: var(--space-sm) var(--space-md);
}
.case-hero__summary {
  max-width: 600px;
  font-size: clamp(.97rem, 1.25vw, 1.08rem);
  line-height: 1.8;
  color: var(--ink-70);
  margin-block-end: var(--space-md);
}
.case-hero__tags { display: flex; gap: .38rem; flex-wrap: wrap; }

/* KPIs */
.case-kpis {
  background: var(--surface);
  padding-block: var(--space-lg);
  border-bottom: 1px solid var(--ink-12);
}
.case-kpis__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(148px, 1fr));
  gap: var(--space-md);
}
.case-kpi { text-align: center; }
.case-kpi__value {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 3.4vw, 2.7rem);
  font-weight: 700;
  line-height: 1;
  color: var(--ink);
  letter-spacing: -.04em;
}
.case-kpi__value em { color: var(--blue); font-style: normal; }
.case-kpi__label {
  font-size: .68rem;
  font-weight: 600;
  letter-spacing: .05em;
  text-transform: uppercase;
  color: var(--ink-40);
  margin-block-start: .5rem;
  line-height: 1.4;
}

/* Body layout */
.case-body { padding-block: clamp(var(--space-lg), 8vw, 100px); }
.case-layout {
  display: grid;
  grid-template-columns: 206px 1fr;
  gap: clamp(var(--space-lg), 6vw, 80px);
  align-items: start;
}
.case-sidebar { position: sticky; top: calc(var(--nav-h) + 2rem); }
.case-nav {
  display: flex;
  flex-direction: column;
  border-left: 2px solid var(--ink-12);
}
.case-nav__item {
  display: block;
  padding: .48rem .85rem;
  font-size: .73rem;
  font-weight: 500;
  color: var(--ink-40);
  border-left: 2px solid transparent;
  margin-left: -2px;
  transition: color var(--transition), border-color var(--transition);
}
.case-nav__item:hover, .case-nav__item.active {
  color: var(--ink);
  border-left-color: var(--blue);
}
.case-sections {
  display: flex;
  flex-direction: column;
  gap: clamp(var(--space-lg), 8vw, 80px);
}
.case-section { scroll-margin-top: calc(var(--nav-h) + 2rem); }

.case-section__label {
  display: flex;
  align-items: center;
  gap: .75rem;
  margin-block-end: var(--space-sm);
}
.case-section__number {
  font-family: var(--font-display);
  font-size: .82rem;
  color: var(--blue);
  font-weight: 700;
  min-width: 1.4rem;
}
.case-section__title {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.2vw, 1.9rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -.025em;
  margin-block-end: var(--space-sm);
}
.case-section__divider {
  width: 26px; height: 2px;
  background: var(--blue);
  border-radius: 2px;
  margin-block-end: var(--space-md);
}

.case-text {
  font-size: clamp(.87rem, 1.05vw, .96rem);
  line-height: 1.87;
  color: var(--ink-70);
  max-width: 680px;
}
.case-text + .case-text { margin-block-start: var(--space-sm); }
.case-text strong { color: var(--ink); font-weight: 600; }

.case-quote {
  border-left: 3px solid var(--blue);
  padding: var(--space-sm) var(--space-md);
  margin-block: var(--space-md);
  background: var(--blue-lt);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  max-width: 680px;
}
.case-quote p {
  font-family: var(--font-display);
  font-size: clamp(1rem, 1.65vw, 1.35rem);
  font-weight: 600;
  font-style: italic;
  color: var(--ink);
  line-height: 1.45;
  letter-spacing: -.01em;
}
.case-quote cite {
  display: block;
  margin-block-start: .55rem;
  font-size: .68rem;
  font-style: normal;
  color: var(--ink-40);
  letter-spacing: .08em;
  text-transform: uppercase;
  font-weight: 600;
}

.case-insight {
  background: var(--ink);
  color: var(--white);
  border-radius: var(--radius-md);
  padding: var(--space-md) clamp(var(--space-sm), 4vw, var(--space-md));
  margin-block: var(--space-md);
  max-width: 680px;
}
.case-insight__label {
  font-size: .63rem;
  font-weight: 700;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--blue);
  margin-block-end: .6rem;
}
.case-insight p {
  font-family: var(--font-display);
  font-size: clamp(.93rem, 1.4vw, 1.2rem);
  font-weight: 600;
  line-height: 1.52;
  color: rgba(255,255,255,.88);
  letter-spacing: -.01em;
}

.case-list {
  display: flex;
  flex-direction: column;
  gap: .65rem;
  max-width: 680px;
  margin-block: var(--space-sm);
}
.case-list__item {
  display: flex;
  align-items: flex-start;
  gap: .8rem;
  font-size: clamp(.84rem, 1vw, .92rem);
  color: var(--ink-70);
  line-height: 1.72;
}
.case-list__item::before {
  content: '';
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--blue);
  flex-shrink: 0;
  margin-top: .62rem;
}
.case-list__item strong { color: var(--ink); font-weight: 600; }

.case-steps {
  display: flex;
  flex-direction: column;
  max-width: 680px;
  margin-block: var(--space-md);
}
.case-step {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: var(--space-sm);
  padding-block-end: var(--space-md);
  position: relative;
}
.case-step:not(:last-child)::before {
  content: '';
  position: absolute;
  left: 23px; top: 46px; bottom: 0;
  width: 1px;
  background: var(--ink-12);
}
.case-step__num {
  width: 44px; height: 44px;
  border: 1.5px solid var(--ink-12);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display);
  font-size: .95rem;
  font-weight: 700;
  color: var(--blue);
  background: var(--white);
  flex-shrink: 0;
}
.case-step__title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  margin-block-end: .3rem;
  padding-block-start: .55rem;
  letter-spacing: -.01em;
}
.case-step__desc {
  font-size: .84rem;
  color: var(--ink-70);
  line-height: 1.72;
}

.case-impact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(188px, 1fr));
  gap: var(--space-sm);
  max-width: 680px;
  margin-block: var(--space-md);
}
.case-impact-item {
  border: 1.5px solid var(--ink-12);
  border-radius: var(--radius-md);
  padding: 1.2rem var(--space-md);
  background: var(--white);
  transition: box-shadow var(--transition), border-color var(--transition);
}
.case-impact-item:hover {
  box-shadow: 0 8px 28px rgba(26,107,250,.1);
  border-color: rgba(26,107,250,.28);
}
.case-impact-item__value {
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 2.2vw, 1.95rem);
  font-weight: 700;
  color: var(--ink);
  line-height: 1;
  margin-block-end: .32rem;
  letter-spacing: -.03em;
}
.case-impact-item__value em { color: var(--blue); font-style: normal; }
.case-impact-item__label { font-size: .7rem; color: var(--ink-70); line-height: 1.4; }

/* Mockup */
.case-mockup {
  margin-block: var(--space-lg);
  border: 1px solid var(--ink-12);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--surface);
  max-width: 680px;
}
.case-mockup img { width: 100%; height: auto; display: block; }
.case-mockup__caption {
  padding: .65rem var(--space-sm);
  font-size: .68rem;
  font-weight: 600;
  color: var(--ink-40);
  letter-spacing: .05em;
  text-align: center;
  border-top: 1px solid var(--ink-12);
  background: var(--white);
  text-transform: uppercase;
}

/* Mobile screens */
.case-screens {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: var(--space-sm);
  max-width: 680px;
  margin-block: var(--space-lg);
}
.case-screen {
  border: 1px solid var(--ink-12);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--surface);
  transition: box-shadow var(--transition);
}
.case-screen:hover { box-shadow: 0 12px 36px rgba(10,10,15,.1); }
.case-screen img { width: 100%; height: auto; display: block; }
.case-screen__cap {
  padding: .5rem .75rem;
  font-size: .63rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--ink-40);
  background: var(--white);
  border-top: 1px solid var(--ink-12);
}

/* Split before/after */
.case-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm);
  max-width: 680px;
  margin-block: var(--space-md);
}
.case-split__col {
  border: 1.5px solid var(--ink-12);
  border-radius: var(--radius-md);
  padding: var(--space-sm);
}
.case-split__label {
  font-size: .63rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink-40);
  margin-block-end: .6rem;
}
.case-split__col--before .case-split__label { color: #dc3b2f; }
.case-split__col--after  .case-split__label { color: #16a34a; }
.case-split__col ul { display: flex; flex-direction: column; gap: .35rem; }
.case-split__col li {
  font-size: .79rem;
  color: var(--ink-70);
  display: flex; gap: .5rem;
  align-items: flex-start;
  line-height: 1.5;
}
.case-split__col li::before { content: '—'; color: var(--ink-40); flex-shrink: 0; font-size: .68rem; margin-top: .1rem; }

/* Case CTA */
.case-cta {
  background: var(--surface);
  border-top: 1px solid var(--ink-12);
  padding-block: var(--space-lg);
}
.case-cta__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  flex-wrap: wrap;
}
.case-cta__text h3 {
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 700;
  margin-block-end: .3rem;
  letter-spacing: -.02em;
}
.case-cta__text p { font-size: .84rem; color: var(--ink-70); }

/* Placeholder */
.case-coming-soon {
  min-height: 60vh;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center; gap: var(--space-sm); padding-block: var(--space-xl);
}
.case-coming-soon__icon { font-size: 2.5rem; opacity: .3; margin-block-end: var(--space-sm); }
.case-coming-soon h2 { color: var(--ink-70); }
.case-coming-soon p  { color: var(--ink-40); max-width: 340px; }

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 1024px) {
  .hero__content { grid-template-columns: 1fr; }
  .hero__photo-wrap { display: none; }
}
@media (max-width: 900px) {
  .sobre-grid { grid-template-columns: 1fr; }
  .sobre-photo { position: static; }
  .home-projects__grid, .projetos-grid { grid-template-columns: 1fr; }
  .exp-item { grid-template-columns: 80px 1fr; }
}
@media (max-width: 860px) {
  .case-layout { grid-template-columns: 1fr; }
  .case-sidebar { display: none; }
  .case-split { grid-template-columns: 1fr; }
}
@media (max-width: 680px) {
  .nav__links { display: none; }
  .nav__hamburger { display: flex; }
  .skills-list { grid-template-columns: 1fr; }
  .footer__inner { flex-direction: column; align-items: flex-start; gap: var(--space-sm); }
  .stats__grid { grid-template-columns: repeat(2, 1fr); }
  .case-screens { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .hero__actions { flex-direction: column; align-items: flex-start; }
  .stats__grid { grid-template-columns: 1fr 1fr; }
  .case-impact-grid { grid-template-columns: 1fr 1fr; }
  .case-cta__inner { flex-direction: column; align-items: flex-start; }
}

/* ── Language toggle ── */
.lang-toggle {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-left: var(--space-sm);
  background: var(--ink-06);
  border-radius: var(--radius-pill);
  padding: 3px;
}
.lang-btn {
  padding: .28rem .62rem;
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--ink-40);
  background: transparent;
  cursor: pointer;
  border: none;
  transition: background var(--transition), color var(--transition);
  line-height: 1;
}
.lang-btn:hover { color: var(--ink); }
.lang-btn--active {
  background: var(--white);
  color: var(--blue);
  box-shadow: 0 1px 4px rgba(10,10,15,.1);
}
/* Dark footer — keep toggle readable */
.nav.scrolled .lang-toggle { background: var(--ink-06); }